7499111121A WE-RJ45 LAN Transformer
MPN: 7499111121A
Würth Elektronik
1 Port RJ45 Through Hole 10/100/1000 Base-T, AutoMDIX
Active1,007 in stock
Overview
The 7499111121A is an integrated RJ45 connector designed for Gigabit Ethernet (10/100/1000 Base-T) applications. It combines a shielded mechanical jack with internal magnetics and LEDs to simplify PCB layout and improve EMI performance. This component supports AutoMDIX and operates over an industrial temperature range of -40 to +85 degrees Celsius.
Why Choose This Part
This integrated solution reduces board space by housing the magnetics inside the RJ45 shell while providing EMI shielding with integrated fingers. The inclusion of bi-color Yellow-Green LEDs allows for direct visual status indication without additional PCB components.
Applications
Industrial Ethernet
Providing reliable network connectivity for PLCs, industrial PCs, and factory automation equipment requiring Gigabit speeds.
Network Interface Cards
Used in high-speed computer networking peripherals to reduce component count and PCB footprint.
IoT Gateways
Enabling wired backhaul for smart building hubs and edge computing devices.
Key Specifications
Features
Board Guide
LED Color
Yellow - Green
Shielding
Shielded, EMI Finger
Orientation
90deg Angle (Right)
Termination
Solder
Applications
10/100/1000 Base-T, AutoMDIX
Mounting Type
Through Hole
Tab Direction
Down
Connector Type
RJ45
Contact Finish
Gold
Number of Rows
1
Number of Ports
1
Contact Material
Tin
Height Above Board
0.549" (13.95mm)
Operating Temperature
-40degC ~ 85degC
Number of Cores per Jack
8
Also Consider
J00-0065NL
Pulse Electronics
- A common alternative for 10/100 Base-TX applications if Gigabit speeds are not required for the specific design.
0826-1X1T-GH-F
Bel Fuse Inc.
- Provides similar Gigabit magnetics integration with a slightly different pinout and LED configuration.




